Hooping of the stacks of blast furnaces



Mai. 8,1928.

A. J.UF. J. coUslN HoormdoF THE sTAcxs op BLAsT Funmcns Fi1ed'Ap`ri1 1, 1927 Patented May 8,1928.

UNITED STATES rPAT-ENT OFFICE.

ARTHUR .TULEs rBANoIs JOSEPH COUSIN, or SEEATNG, BELGIUM, vAssIeNon To socrE'rE ANONYME .Tomi cocKEnILL, or 'sEnAINe, BELGIUM.

HOOPING F THE STCKS 0F BLAST FURNACES.

Application ined April 1, 1927, serial No. 180,108, and 1n Belgium April s, 1926.

. 2 My invention relates to im rovements in the hooping of the stacks of last furnaces. As it is well known, the hooping as actual- 1y effected comprises a series of hoops, each 5 of these hoops surrounding the stack on all its periphery. This system of hooping presents lnany 1nconvenie'nces.

Firstly it wants of rigidity in the vertlcal direction, and does not avoid the sinkmg of the'masonry. Moreover the breakage of one hoop exerts its influence on thel Whole pe'- riphery of the stack by deprivln the. set of bricks which is thus exposed o all support whereby the exposed bricks may be dislocated by the least explosion until the hoop has been repaired.

In order to avoid these incoliveniences-it 'has been suggested to surround the whole stack ywith a continuous covering of sheetiron. This sheeting has not given good results in view of the fact that in this case the masonry is inaccessible and cannot be E repaired, which constitutes a great draw-5 E back when the quality of the coke 'necessb tates frequently lateral soundings or local repairs of certain partsof the stock.

My, invention has for its object to secure the rigidity and the safety of the systems in which it is made use of a continuous covering, and at the same time 'to maintain the advantages of the ordinary system of hooping with regardto the accessibility of the stack.' With this object in view my invention .A essentially consists in the special arrangements and combinations of parts hereinafter,

fully described and pointed out in the 'appended claims.

. 40 Referring to the yannexed drawings:

Figs. 1 and 2 are. respectively a vertical cross sectional view and a front view ofthesystem of hooping vention. v

Fig. 3 is a horizontal cross section at the level of one hoop.

On these drawings, B are the hoops which are arranged around thelstack at different heights and which are connected by upright osts connected at the lower part to the racket rim M. These upright posts A,V the `-number of which is' 6,0r 8 are very resistant and "ktend, vto the upper part of the stack.

according to the insegments of hoos `angle irons.

They divide each hoop in 6 or 8 independ. ent segments and are constituted by a steel plate p the thickness of which is about 2 to 4 cm. and on which two angle irons are rlveted so as to forni two parallel ribs C to lwhich the ends of the segments B are fixed. To this end, the ribs C are provided with holes a and the ends of the segments are provided with bolts Z) having a screwed end engaging in the said hole, the bolts b'. being maintained through nuts d. As it will be easil/v understood, these bolts b could be replace: by keys or any other" convenient means. The rigidity of the ribs C is obtained by cross pieces 7'.

The holes rprovided in the ribs C may be disposed so that the lsegments will be in alignment with each other or in a staggered relation. y What I claim is:

1. In a system of hooping for the stacks of blast furnacesin combination with the masonry of the stack upright posts arranged 0n the said masonry, se ments of hoops disposed horizontally at different levels on the masonry, and means whereby the said seg ments of hoops are connected to the said upright posts.

2. In a system of hooping for the stacks of blast furnaces, `in combination plates arrangied vertically on the masonr of the stac angle irons fixed on the said. lates,

disposed horizontally on the masonry an means whereby the said segments of hoops are connectedto the said '3. Ina system of hooping for the stacks of blast furnaces in combination, vplates arran ed vertically on the masonry of the stac two parallel angle virons fixed on the said plates and extending vertically from the ,upper to the lower part'of the stack, segments of vhoops disposed horizontally on themasonry holes in the said angle irons, bolts engaging on the said holes whereby the said segments of hoops are connected to the` said angle irons .lixed on the said verf tical plates and means-whereby the rigidity of the said vparallel angle pieces is secured.

4. In 'a system of hooping for the stacks, of the` blast furnaces in combination plates arranged vertically on the masonry of the 105 stack, two parallel anglev Irons fixed on .the

said plates and extending vertically from cross ieces whereby the rigidity of the said the upper to the lower partJ of the stak, paral el angle irons is secured. v

segments `of hoops disposed horizontally on the masonry, holes in the parallel angle 5 irons, bolts engaging in the said holes,

whereby the said segments of hoops arel connested to the said parallel angle irons and In testimony whereof I have axed my 10 signature.

ARTHUR JULES FRANCOIS JOSEPH CUSIN. 

